7 November 2005 Unipolar and bipolar electrical pulse generator using photoconductive semiconductor switches
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Abstract
We achieved the generation of unipolar and bipolar electrical picosecond pulses by using semiconductor switches in linear mode. Electrical pulses of hundreds volts to several thousands volts were obtained: in example unipolar pulses of about 11kV with duration of 300ps (full width at half maximum) were obtained and bipolar pulses of 3kV peak-to-peak with cycle duration of 450ps were done. Besides the linear mode running of these doped silicon semiconductors permitted to synchronise several generators and it allows adjustment of the bipolar pulse spectrum by using the frozen wave generator principle. So we demonstrated the feasibility of high voltage ultra-wideband electrical pulse generation with less optical energy than already published in the linear mode.
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B. Vergne, V. Couderc, A. Barthélémy, M. Lalande, V. Bertrand, D. Gontier, "Unipolar and bipolar electrical pulse generator using photoconductive semiconductor switches", Proc. SPIE 5989, Technologies for Optical Countermeasures II; Femtosecond Phenomena II; and Passive Millimetre-Wave and Terahertz Imaging II, 59890W (7 November 2005); doi: 10.1117/12.660076; https://doi.org/10.1117/12.660076
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